Jean baptistb java mignon



(No Model.)

' J. B. J. MIGNON.

V l CANDLE POR ELECTRIC LIGHTING. Nmzsszz. Pat'nted Peb. 14.11882.

|I H ,.I Y I I'IIIIIHI v wish: w... w O Pf IiisraiflHW I l lullfllllllrllqb-` v N I 'f\\\ Jini:lwg'lli; I mm E I'Mimuuizinf: 1 C m ""iizmiw" WW1/MJ e/.S y In/z/e/n/Zr: wmw pkw a/mwq/m ...M

i UNITED STATES PATENT OFFICE.

JEAN BAPTISTE JAVA MIGNON, OF PARIS., FRANCE.

CANDLE FOR ELECTRIC LIGHTING.-

SPECIFICATION forming part of Letters Patent No. 253,822, dated February 14, 1882,

Application filed September 17, 1881. (No model.) Patented in France January 3, 1881.

To all whom tt may concern;

Beit known that I, JEAN BAPTISTE JAVA MIGNON, a citizen of the Republic of France, and residing in Paris, France, have invented certain Improvements in Candles for Electric Lighting, (for which I have obtained a French patent, January 3,1S81,) of which the following is a speciiication.

This invention relates to improvements in the manufacture and mode of employing carbons orcandles for electric lamps, as hereinafter described with reference to theaccompanying drawings.

Figure 1 of the accompanying drawings is a vertical section of an apparatus employed according to this invention, and Fi g2 isavertical section of a modification ofthe same apparatus.

In carrying out lthe said invention carbone for electric lamps are constructed with a core or wick, as hereinafter described. It has been observed that by making the carbons hollow and filling them up either with another and smaller carbon of different composition, or with a substance differing from that ot' which the carbon proper is composed, introduced by any suitable means, a more steady and regular light is obtained than that produced by the employmentof solid carbons. Carbonsot' this description are known in practice by the general term of carbons with wicks or cores. It has been found by experience that the same results and the same advantages are obtained with solid carbons composed of pasty or plastic materials of differentdescriptions, molded bylbeingforced simultaneously through a suitably-arranged molding-orifice, and subsequently submitted to theoperation usually employed to impart the requisite quantities of homogeneity and density, and to insure the brilliancy of the light emitted.

They improved apparatus employed in the manufacture of carbons according to this invention, and illustrated in Fig] ofthe accompanyingdrawings, consists of an internal mold, m, supported in position in the interior ot' la larger mold, M, by vmeans of suitable webs, a, An Vannular or hollow ram, B, attached to a block or head, A,'works in the annular space between the external surface of the inner mold and the internal surface of the outer mold, and a solid ram, C, also attached to the block A,

works in the interior ot' the inner mold. The inner mold is constructed at its lower extremity, where it terminates within the outer mold, with a small central tube or orifice, t, corresponding to the diameter of the core. The outer mold is also constructed at its lowerextremity, and terminates in a contracted tube or oritice, `T, concentric with but extending lower than the orifice of the innermold, and corresponding to the external diameter of the carbon. The capacity of the molds is so calculated that the quantity of materials expelled through the respective molding-orifices corresponds to the size of the carbons which it is desiredtoproduce. Onthedescentof thcrams the material issuing from the contracted orifices of the inner mold is surrounded by the material expelled at the same time from the larger and outer mold, and which, in passing through the contractedoriflce of the latter, is compressed around the material issuing from the inner mold, and adheres thereto by the time the carbon is compressed to its final dimensionsthat is to say, shortly before it issues from the tube T ofthe outer mold. A similar result may be obtained by employing the apparatus illustrated in Fig.2 and next hereinafter described. According to this modification the apparatus is composed of a mold,M, provided with a ram, P, and terminating in a contracted Apassage or tube, T, at its lower extremity. A chamber provided with a ram, p, is arranged at the side of this mold, and also terminates in a contracted passage communicating with a tube, t, so arranged as to discharge its contents in the center of the contracted passage or tube T. The material employed for the outer part of the carbon is placed in the mold under the ram P, and the material for forming the inner part or core is placed under the ram pin the chamber at the side. On the descent of the rams the materials are expelled-from the chamber and from the mold through the passages t and T, respectively, under the same conditions as in the apparatus illustrated in Fig. l.

By arranging the chamber containing the materials for the core at the side, as in the apparatus secondly hereiubefore described, and illustrated in Fig. 2, the advantage is obtained of enabling two independent rams to be employed, so as to allow of the relative propor- AMAA A IOC the outer mold being concentric with but lower than the orifice 0f the inner mold, and being contracted below said orifice of the inner mold, substantially-as described.

In testimonr whereof Ihave signed myname to this specification in the presence of two subscribing witnesses.

JEAN BAPTISTE JAVA MIGNON.

Witnesses:

JOSEPH DELAGE, ROBT. M. HOOPER,

U. S. Consulate General. 

